Fischer random chess numbering scheme: Difference between revisions

Revision as of 21:29, 29 January 2022

Revision as of 10:58, 21 March 2022

Line 255:

Given an SP, extract the bishop's code, the NQ-skeleton and its queen's position. Then, locate, in the appropriate column, the NQ-skeleton at hand, say at No. M. The Fritz9 idn = (bishop's code) + M. For the standard SP, we extract 6 -NQ-N- and 1 and get Fritz9 idn = 6 + 353 = 359.

'''Fritz9 NQ-skeleton Table'''

-

{| border="1" cellpadding="4" cellspacing="0" style="font-family:Courier;background:#ffffff;border-collapse: collapse;"

1 NNQ--- 241 NN-Q-- 481 NN—Q- 721 NN---Q

|+

17 NQN--- 257 N-NQ—497 N-N-Q- 737 N-N--Q

|-

33 NQ-N-- 273 N-QN—513 N--NQ- 753 N--N-Q

| 1 49|| NQ—NNNQ--- || 289241 N|| NN-Q-N- || 529481 N--QN|| NN—Q- || 769721 N|| NN---NQQ

|-

65 NQ---N 305 N-Q--N 545 N--Q-N 785 N---QN

| 17 81|| QNNNQN--- || 321257 || N-NNQ—561NQ— || 497 || N-NNN-Q- || 801737 || N-NN—QN--Q

|-

97 QN-N-- 337 -NQN—577 -N-NQ- 817 -N-N-Q

113| QN—N-33 || 353 -NQ-N-- || 593273 || N-QN— || 513 || N-QN-NQ- || 833753 || -N--NQN-Q

|-

129 QN---N 369 -NQ—N 609 -N-Q-N 849 -N--QN

| 49 || NQ—N- || 289 || N-Q-N- || 529 || N--QN- || 769 || N---NQ

145 Q-NN—385 -QNN—625—NNQ- 865—NN-Q

|-

161 Q-N-N- 401 -QN-N- 641—NQN- 881—N-NQ

177| Q65 || NQ-N--N || 417305 || N-QN—NQ--N || 657—NQ545 || N--Q-N || 897—N785 || N---QN

|-

193 Q--NN- 433 -Q-NN- 673—QNN- 913 ---NNQ

| 81 || QNN--- || 321 || -NNQ— || 561 || -NN-Q- || 801 || -NN—Q

209 Q--N-N 449 -Q-N-N 689—QN-N 929 ---NQN

|-

225 Q---NN 465 -Q--NN 705—Q-NN 945 ---QNN

| 97 || QN-N-- || 337 || -NQN—577NQN— || 577 || -N-NQ- || 817 || -N-N-Q

|-

| 113 || QN—N- || 353 || -NQ-N- || 593 || -N-QN- || 833 || -N--NQ

|-

| 129 || QN---N || 369 || -NQ—N || 609 || -N-Q-N || 849 || -N--QN

|-

| 145 || Q-NN— || 385 || -QNN— || 625 || —NNQ- || 865 || —NN-Q

|-

| 161 || Q-N-N- || 401 || -QN-N- || 641—NQN641 || —NQN- || 881 || 881—N—N-NQ

|-

| 177 || Q-N--N || 417 || -QN—N || 657 || —NQ-N || 897 || —N-QN

|-

| 193 || Q--NN- || 433 || -Q-NN- || 673—QNN673 || —QNN- || 913 || ---NNQ

|-

| 209 || Q--N-N || 449 || -Q-N-N || 689—QN689 || —QN-N || 929 || ---NQN

|-

| 225 || Q---NN || 465 || -Q--NN || 705—Q705 || —Q-NN || 945 || ---QNN

|}

Anyone with Fritz9 can verify this table by entering in the idns. It directly refers to just those SPs with bishop's code 0 i.e. with the bishops on a1 and b1.